# Danksharding - Dapplion, ChainSafe

###### tags: `2023`, `DAY`, `Client`
{%hackmd @ethtaipei/ByQLufgQ2 %}

> Share your thoughts from here

# preface
if data unavailable
1. optimistic rollups: operator ccan steal funds
2. validity rollup: operator can lock the users

=> Data Availability matters
=> who need to perfom DA checks

#
1. Naive: every download every thing
2. Probablistic sampling: Blob
3. Probablistic Sampling of extended data

Blob - Erasure code
|-----|-------------|

Binding commitment and data, blockspace and blob

# Vision in 2-3 years away
1. Blobs w/ KZG
2. DAS

proto danksharding => blobs only now

# more detail
need to download data
producing block delay disincentivize solos staker

how to network blob: thought in progrss: Blob coupling

# spec
`blob_sidecar_{index}`
4 index